The KOBELCO YT01V00017S006 back-up ring is a genuine OEM component designed to support O-rings and prevent extrusion in high-pressure hydraulic applications. This durable ring, with an outer diameter of 115.0 mm, an inner diameter of 105.0 mm, and a thickness of 1.0 mm, is crucial for maintaining the sealing performance of hydraulic cylinders and other critical systems in various Case IH, New Holland, and Kobelco excavators. Weighing approximately 0.007 kg, it ensures reliable operation and extends the lifespan of hydraulic seals.